<!DOCTYPE HTML> <title>font.size.inflation.lineThreshold test</title> <style> body { width: 600px; } body, textarea { font-size: 12px } p { margin: 0 } </style> <!-- In a 600px container, the minimum font size at 15em per line is 40px. This means we map 0px-60px into 40px-60px, so 12px gets mapped to 44px. Further, with a lineThreshold of 100, we need 50 characters of 12px text to meet the line threshold. --> <p>123456789 123456789 <textarea rows="2" cols="9"> hi </textarea> 123456789 1234567890</p>